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Pulsar FLOWPULSE, Инструкция по эксплуатации

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FLOWPULSE INSTRUCTION MANUAL 
 

52 

CHAPTER 5 OPTIMISATION AND DIAGNOSTICS 

Interpreting Diagnostic Trace 

 

 

Figure 8:  Example of traces for no-flow (top) and 1.4 m/s flow (bottom). 
The vertical axis is related to the signal strength, while the horizontal axis is 
related to detected flow.   
The top chart in Figure 8 shows the trace under no-flow condition.  When 
there is no flow, the trace should be relatively flat and rest on signal 
index=90.  If the line is not relatively flat, does not rest around signal index 
of 90 or there is any peak that is more than 10 signal indexes in size, then 
noise is affecting the device. 

Содержание FLOWPULSE

Страница 1: ...FlowPulse Instruction Manual ...

Страница 2: ...2 ...

Страница 3: ...ss injury or damage whatsoever arising out of the application or use of any product or circuit described herein Every effort has been made to ensure accuracy of this documentation but Pulsar Measurement cannot be held liable for any errors Pulsar Measurement operates a policy of constant development and improvement and reserves the right to amend technical details as necessary The FlowPulse shown ...

Страница 4: ...upply Requirements 13 Dimensions 14 Terminal Connection Detail 14 FlowPulse IP68 15 Wiring 15 Terminal Connections 16 FlowPulse Installation Procedures 17 Flow Pulse PC Installation 18 Preparation for Operation 19 Maintenance 19 Chapter 3 Setting Up FlowPulse Using Software 20 Interface 20 Using FlowPulse PC 20 Software Icons 21 Flow Tab 23 Flow Record Tab 24 Trace Tab 25 Parameters Tab 26 Manual ...

Страница 5: ...nt 57 Chapter 6 Common Questions and Answers 58 Will mechanical vibration affect flow measurement 58 Is it possible to operate FlowPulse in a high noise environment 58 What is the effect of poor pipe condition 58 What is the effect of pipe lining 58 Does FlowPulse measurement drift over time 58 Can FlowPulse be operated in a wet environment 59 Chapter 7 Troubleshooting 60 LED Indications 60 Fault ...

Страница 6: ...FLOWPULSE INSTRUCTION MANUAL 6 Relay state not stable 63 Chapter 8 Disposal 64 Transducers 64 Controllers 64 ...

Страница 7: ...ng manual will ensure that your installation is as simple as possible About this Manual It is important that this manual is referred to for correct installation and operation There are various parts of the manual that offer additional help or information as shown Tips TIP Look for this icon throughout your Pulsar Measurement manual to find helpful information and answers to frequently asked questi...

Страница 8: ...ed from bubbles particles and vortices in all directions and at a wide range of frequencies The wide refracted ultrasonic beam maximises the ultrasound energy captured from flowing particles These multiple reflections are received back into the unit via a second crystal The mass of data generated is analysed using FlowPulse s Refracted Spread Spectrum Analysis RSSA digital signal processing platfo...

Страница 9: ...s optional controllers which are listed below Flow Monitor wall mount unit Quantum 3 Ultimate Controller For further details on how to connect and use the Flow Pulse with the controllers listed above please refer to their individual instruction manuals which can be downloaded from our website www pulsarmeasurement com For the best results FlowPulse should be applied where There is full pipe flow T...

Страница 10: ...ion 3mm sec Pipe wall thickness Metal or rigid pipe up to 20mm 0 8in thick Min Particle size 100µ Max particle size 200ppm Pipe diameter V1 30mm to 350mm 1 2 to 14in V2 30mm to 1250mm 1 2 to 49 2in Min range 0 3m sec Max range flow 4 0m sec 10m sec for high flow version Response time fully adjustable 1 sec minimum for fast response version SIGNAL PROCESSING Description RSSA Refractive Spread Spect...

Страница 11: ...lowPulse PC Programmed data integrity Via non volatile RAM SUPPLY Power supply 18 28V DC Power Consumption 2 4W 24V typical 3W 24V maximum Pulsar Measurement operates a policy of constant development and improvement and reserve the right to amend technical details as necessary ...

Страница 12: ...FLOWPULSE INSTRUCTION MANUAL 12 EU Declaration of Conformity ...

Страница 13: ... used minimum conductor size of 0 5mm The cable screen should be connected to the enclosure at the cable entry point via the cable gland see figure below The screen of the cable should be earthed at the other end The supplied cable gland is suitable for cables up to 10mm O D Important Notice All shipping cartons should be opened carefully When using a box cutter do not plunge the blade deeply into...

Страница 14: ... the Modbus return The power supply ground on FlowPulse must not be earthed or connected to the cable screen Dimensions Cable Entry It is recommended that you use the cable gland that comes with the Flow Pulse to ensure that the ingress rating is maintained Terminal Connection Detail ...

Страница 15: ... a table identifying the terminal connections for each cable DESCRIPTION WIRE COLOUR FLOWMPULSE TERMINAL FLOW MONITOR TERMNAL 0V GND Blue 1 22 24V DC Brown 2 23 NC Relay Red 3 Not used with Flow Monitor COM Relay Black 4 Not used with Flow Monitor NO Relay Violet 5 Not used with Flow Monitor mA OUT White 6 Not used with Flow Monitor mA OUT Pink 7 Not used with Flow Monitor RS485 SCR Green 8 21 RS4...

Страница 16: ...e mA output of 4 20mA with a maximum load of 1k It has a 20 µA resolution and a user programmable and adjustable span RS232 Serial Interface The RS232 interface is available on the RJ 11 socket for setting up and operating the FlowPulse using the FlowPulse PC software It is recommended that the serial cable does not exceed 10 metres in length RS485 Serial Interface with Modbus It is recommended th...

Страница 17: ...ubmerged in liquid The FlowPulse and the pipe surface around the installation location should not be exposed to external flowing liquid The FlowPulse should be installed on a straight section of pipe at least 5 pipe diameters from any restrictions or sources of fluid turbulence e g pumps valves tees elbows where possible On horizontal pipes it is preferable to mount Flow Pulse between 1 o clock an...

Страница 18: ...re that the FlowPulse is aligned along the pipe axis as illustrated in Figure 3 Figure 3 Flow Pulse correctly aligned along the pipe axis Tighten the banding while ensuring best contact and correct alignment between the Flow Pulse and the pipe Flow Pulse PC Installation The FlowPulse PC software is supported on Win 7 Win 8 and Win 10 32 and 64 bit The Net Framework 4 0 is required to run the progr...

Страница 19: ...arameters stored on the Flow Pulse will be extracted by FlowPulse PC The Device bulb on the top right corner of the program will light up to indicate a successful connection Choose the Parameters tab on FlowPulse PC where the current device parameters are shown and can be modified please refer to the Chapter on Setting Up FlowPulse before modification On the top left corner of the Parameters tab s...

Страница 20: ...FlowPulse PC After launching the program and connecting to the Flow Pulse the device parameters will be automatically extracted once a connection is established Refer to the section on Preparation for Operation in Chapter 2 for more details on FlowPulse PC installation and how to connect to Flow Pulse Pipe Internal Diameter The pipe internal diameter is the only parameter that must be entered to g...

Страница 21: ...ulse device Set the baud rate to 57600 Setup Serial Port with RS232 or to 19200 with RS485 Disconnect appears after connection is established Click to disconnect from the Flow Pulse Diagnostic Trace requests for diagnostic trace When active this icon border will light up yellow and live traces can be observed on the Trace tab Click again to deactivate ...

Страница 22: ...08 00 flg This can be renamed FlowPulse PC 1 2 3 and older generates a txt file with the same naming structure minus the site name this cannot be renamed If recording over a long duration a new file will be automatically generated after 30 minutes The recorded data files are stored on the FlowPulse PC installation folder by default To stop recording click the Save Data button again Replay recorded...

Страница 23: ...peed Decrease Replay Speed during replay click to decrease replay speed Exit click to exit program Flow Tab The default screen of FlowPulse PC is the Flow tab The dial on the left displays the linear flow velocity while the numerical display on the right shows the volumetric flow rate The default volumetric unit is litres per second and is configurable on the Parameters tab Signal Strength The sig...

Страница 24: ...tion A higher stability level indicates higher level of repeatability and better flow tracking Flow Record Tab The Flow Record provides a record of flow over time Each point of flow on the graph represents a 1 2 second interval However when the trace button has been pressed and a trace is being retrieved from the Flow Pulse this slows down how frequently a point on the graph is plotted and the poi...

Страница 25: ...nd display diagnostic traces when the Trace button is activated Please refer to Diagnostic and Troubleshooting for more information on interpreting the traces Important Notice DO NOT TRY AND REMOVE THE LID Consult Pulsar if you require any assistance with the device ...

Страница 26: ... SAVE button must be clicked to send and save the new values to the device The values need to be valid and within allowed range for a parameter change to be successful If the change is not successful the values shown on the Parameter tab will reflect the current parameter value on FlowPulse If Flow Pulse is being controlled simultaneously on both RS232 via FlowPulse PC and RS485 via Modbus interfa...

Страница 27: ...any change in the calibration factor is stored on FlowPulse Sensitivity The sensitivity of FlowPulse can be increased for difficult pipes or liquids When using FlowPulse on high sensitivity setting observations should be made to ensure that no flow indication is consistent Operating at higher sensitivity may increase the susceptibility of the device to external sources of noise A lower sensitivity...

Страница 28: ...nsitivity be set as high as possible subject to the constraint of false flow indication Damping Fluctuations from non laminar flow as well as from electrical noise will affect the stability of the flow readings The damping parameter allows these fluctuations to be smoothed at the expense of response time A higher damping will produce a more stable reading with less fluctuation but the response tim...

Страница 29: ... The table below lists the valid combination of volumetric and time units VAILD VOLUME PER TIME Litres Second Minute Cubic Metres Minute Hour Cubic Feet Second Minute Imperial Gallons Second Minute US Gallons Second Minute Million US Gallons Hour Day Access Level The access level refers to the permission to perform actions or modify some parameters There are two levels of access the USER and SERVI...

Страница 30: ... greater than this limit will adhere to the set damping Min 22 Max 426 Default 119 Flow Low and Flow High The Flow Low and Flow High parameters represent the minimum and maximum flow rate setting in units of volumetric flow rate By default the flow rate limits in units of litres per second are set to correspond to the specification of flow velocity range of 0 to 4 m s 0 to 10m s for high flow vers...

Страница 31: ... low high range of flow The mA High limit must be larger than the mA Low limit and the Flow High limit must be larger than the Flow Low limit The Flow Low and Flow High limits are in units of volumetric flow rate as determined by the volumetric and time unit parameters litres sec by default Therefore the Pipe I D should be correctly set before setting the Flow Low and High limits mA Output Flow Fl...

Страница 32: ...rate the device s mA output at Flow Low limit and Flow High limit For example if the mA output is 4 05 mA at Flow Low limit the mA Low setting can be set from 4 0 to 3 95 for calibrating the actual mA output to 4 00 mA exactly mA Output mA Trim The mA trim allows calibration to the mA output by using a fixed mA offset The offset is in units of microamps µA For example if the mA output is 4 1 mA at...

Страница 33: ...on of the different alarm modes ALARM MODE ZONE LOW ZONE MID ZONE HIGH Low Default Alarm ON No Change Alarm OFF High Alarm OFF No Change Alarm ON Out of Range Alarm ON Alarm OFF Alarm ON Alarm OFF De energise Alarm ON Alarm OFF Figure 6 The alarm modes and its effect in the relay alarm zones as defined by the low and high set points Flow Rate Time High Setpoint Low Setpoint Zone Low Zone Mid Zone ...

Страница 34: ...d The Low Persist LowPsis parameter is associated with the Low Set point while the High Persist HighPsis parameter is associated with the High Set point For example at low alarm mode the flow must exceed the High Set point before the alarm is disarmed and the relay switched If the High Persist value is set to 2 and the reading is present for 2 consecutive seconds that exceed this set point then a ...

Страница 35: ...ed by entering the parameter address in the Address field and clicking on the Query button The FlowPulse will reply with the current value of the parameter For setting a parameter both the Address and Value must be entered before clicking on the Set button The appropriate access levels are required for setting parameters The list of parameter addresses and valid values are available in the chapter...

Страница 36: ...ters Extract configuration parameters from the device and save onto PC as a parameter file This is saved to FlowPulse PC s installation folder and the filename is prefixed with ParamFlowPulse Load Parameter to Device Load the parameters from a parameter file onto FlowPulse This should only be used with a file that has a prefix of ParamFlowPulse Bootloader Control Launch the Bootloader PC program f...

Страница 37: ...on the window a prompt will appear to continue to the next time frame Modbus to PC 485 Allows changing a FlowPulse that is currently set to Modbus to PC 485 so that FlowPulse PC can work with the FlowPulse This feature requires a Modbus to USB converter Write Modbus Register This allows FlowPulse PC to act as a Modbus master and modify single parameters on a FlowPulse via Modbus This feature requi...

Страница 38: ... for individual range The naming syntax for the parameters is with a prefix of p before the address For example a parameter at address 102 is P102 The value content of the parameter is delimited by a colon such that P102 20 indicates that the parameter at address 102 has a value of 20 The terms parameter and register are used interchangeably as the parameter number is the actual address of the sto...

Страница 39: ...low reading while P21 contains the fractional part of the flow reading The P21 is stored as a whole number from 0 999 allowing a fractional representation from 0 001 to 0 999 Signal Strength P22 P22 gives the current signal strength in terms of percentage from 1 to 100 Stability P23 P23 gives the current stability in terms of percentage from 1 to 100 12 36 Register 20 12 Register 21 360 ...

Страница 40: ...o offset of 1 PARAMETER ADDR OPTIONS DEF NOTES Modbus Mode 51 0 Not in use 1 ASCII mode not fully supported yet The PC 485 mode enables FlowPulse PC interface using RS485 Modbus protocol turned off while using PC 485 Refer to PC over 485 section in Chapter 5 for more information Device Address 52 Unique Address 1 127 126 Modbus Device id Baud Rate 53 0 1200 1 2400 3 9600 4 19200 5 38400 6 57600 7 ...

Страница 41: ...Bit 63 1 One stop bit 2 Two stop bits 1 Stop bit for RS232 Processing Parameters The following are parameters that relate to the detection and processing of the flow signal PARAMETER ADDR OPTIONS DEF NOTES Sensitivity 102 800 3000 1600 Higher number gives lower sensitivity Damping 104 10 40 24 Higher number gives more damping Average Count 105 1 20 6 This is the number of averaging to perform on t...

Страница 42: ... before a trace is considered to have a raised noise floor Step Response Mode 113 0 Off 1 On 1 When StepResp is off no damping bypass will be performed Step Response Threshold 115 22 426 60 The threshold that the step change size needs to exceed before damping bypass is invoked May use diagnostic trace to adjust this Minimum flow Cutoff 120 250 4000 740 This parameter multiplies the units of flow ...

Страница 43: ...the noise floor is more than P111 away from the normal floor without flow This causes the flow to be tracked at a lower flow index so that compensation can be applied Pipe Type 133 0 2 0 Adjustment factor to compensate for the type of pipe material 0 Iron No change 1 Stainless Steel x1 8 2 Hard Plastic x1 1 Density 134 0 4 2 This parameter is sued to set up the type of material being measured in t...

Страница 44: ... is 100 for 100 Example 50 would be half and 200 would be double the reading Multipoint Calibration 1 5 m s 155 5 5000 100 In percentage terms default is 100 for 100 Example 50 would be half and 200 would be double the reading Multipoint Calibration 3 0 m s 156 5 5000 100 In percentage terms default is 100 for 100 Example 50 would be half and 200 would be double the reading Multipoint Calibration ...

Страница 45: ...t of the mA output Small adjustment can also be made to calibrate the mA output mA High 163 10000 20000 20000 In units of µA 1000 1mA This can be used to adjust the higher limit of the mA output Small adjustment can also be made to calibrate the mA output mA Trim 164 0 1000 500 In units of µA applies an offset across the full range of mA output This is centred upon 500 such that the default value ...

Страница 46: ...applies an offset to the higher end of the mA output range The default value is 1000 which relates to 0 trim added Anything lower than 1000 will subtract from the mA output and anything above 1000 will add to the output Flow Low integer part 176 0 65535 P176 contains the whole number part of Flow Low limit while P177 contains the fractional part of Flow Low limit The P177 value is stored as whole ...

Страница 47: ... of the current volumetric flow rate Flow High Fractional part 179 0 1000 Alarm Relay Parameters Please refer to the diagrams in Chapter 3 Relay Alarm section before setting the Alarm Relay parameters manually or over Modbus PARAMETER ADDR OPTIONS DEF NOTES Alarm Mode 201 0 Low alarm 1 High alarm 2 Out of range alarm 3 In range alarm 0 Refer to Relay Alarm section in Chapter 3 Relay Mode 204 0 Non...

Страница 48: ...209 contains the fractional part of Flow Low limit P208 is stored as a whole number from 0 999 allowing a fractional representation from 0 001 to 0 999 Note The flow value is in units of the current volumetric flow rate Low Set Point Fractional part 209 0 1000 High Set Point Integer part 210 0 65535 P210 contains the whole number part of Flow High limit while P211 contains the fractional part of F...

Страница 49: ...d Minute Imperial Gallons Second Minute US Gallons Second Minute Million US Gallons Hour Day PARAMETER ADDR OPTIONS DEF NOTES Volumetric Unit 192 1 Litre 2 Cubic metre 3 Cubic feet 4 UK Gal 5 US Gal 6 MUSG 1 NOTE Refer to the table on valid combinations of volumetric and time units Setting invalid combinations will result in significant measurement errors Time Unit 193 1 Sec 2 Minute 3 Hour 4 Day ...

Страница 50: ...ith the version of hardware Device Information Parameters These parameters are read only and are usually only updated by the device PARAMETER ADDR DEF NOTES Access Level Parameter 280 0 Write the necessary access code to this register in order to gain associated access level No access code is required for user level access Read from this register to get the current access level 0 User level 1 Serv...

Страница 51: ... and triggers relay in the same way as real flow Factory Reset 297 0 Writing 7 to this register will reset all parameters to factory default Reset to Bootloader 299 0 Writing integer 9 to this register will reset the device into Bootloader mode Device will remain in Bootloader mode for around 35 seconds If no Bootloader software is connected to the device after 35 seconds device will resume normal...

Страница 52: ... the signal strength while the horizontal axis is related to detected flow The top chart in Figure 8 shows the trace under no flow condition When there is no flow the trace should be relatively flat and rest on signal index 90 If the line is not relatively flat does not rest around signal index of 90 or there is any peak that is more than 10 signal indexes in size then noise is affecting the devic...

Страница 53: ...ease the Sensitivity setting Refer to the High Noise Environment section if unusual observations are seen on the diagnostic trace PC over RS485 In addition to the RS232 port FlowPulse can also be interfaced to the PC via the RS 485 connection A standard USB to RS485 converter is required While using PC over RS 485 the Modbus RTU protocol will not be available Follow these steps to use PC over RS 4...

Страница 54: ...nse 1 Establish connection using FlowPulse PC 2 Slide Sensitivity to the lowest setting 3 Slide Damping to the lowest setting 4 Set Averaging to 2 5 Set Step Thresh to 40 6 Set Step Limit to 300 7 Set Persist to Off 8 Click SAVE and wait for 10 seconds to complete While testing the response time please ensure that diagnostic traces are not being called by FlowPulse PC To restore factory default se...

Страница 55: ...sed the user may wish to replicate such customisation on a second device Saving and loading parameters can be used to avoid having to set up the parameters individually again 1 Connect FlowPulse PC to the first device then select System Save Device Parameters 2 A confirmation message will appear and the parameters saved to a file within the default folder use Info Data Folder Path to see the folde...

Страница 56: ...ease ensure that the device is connected to the PC via the RS232 port or the RS485 port You need the firmware file and the COM port number on the PC 2 Put the device into Bootloader mode by connecting FlowPulse PC and select System Switch Device into Bootloader 3 Select System Bootloader Control on FlowPulse PC this will launch the Bootloader interface 4 On the Bootloader Interface choose the COM ...

Страница 57: ...ut the device into Bootloader mode again High Noise Environment Flow Pulse may be affected by both ultrasonic and electrical noise Exercise the following precautions during installation 1 Avoid using other clamp on ultrasonic device less than 1 metre from Flow Pulse 2 Ensure that screened cables are used and that the Flow Pulse enclosure is properly Earthed do not connect the cable screen to the G...

Страница 58: ...er What is the effect of poor pipe condition One of FlowPulse s unique strength is its ability to detect flow with very weak ultrasonic signals However severe pipe corrosion both externally and internally can affect the accuracy of measurement Flaky pipe surfaces should be cleaned and sand down Severe build up or deposit on the pipe internal can also significantly attenuate ultrasonic signal What ...

Страница 59: ...quid Operation in an environment that frequently exposes the device to liquid is not recommended External liquid moving in direct contact with the device or the pipe surface where it is installed may be interpreted as flow and produce flow reading in no flow conditions Consider applying an air filled or porous cladding around the device and pipe vicinity to prevent detection of external liquid flo...

Страница 60: ...oader mode Waiting for connection from Bootloader PC software Off Off Device not powered or if powered a critical fault has developed Fault Registers and Log File The registers 270 279 can be queried via FlowPulse PC or Modbus to check for fault codes 1 Retrieved parameter exceeded valid range 2 Parameter value entered by user exceeded valid range 3 Number of self reset events register 266 exceede...

Страница 61: ...ows Pipe is not full Reinstall on the lower quadrant of the pipe Noise and or interference If possible relocate away from pumps and valves about 10 diameters and elbows and tees about 5 diameters Ensure a screened cable is used and the screen is not connected to the ground of the power supply or mA output The cable screen should be connected to the enclosure using the cable entry gland and earthed...

Страница 62: ...sible Variable Speed Drive VSD interference Ensure that VSD manufacturers wiring and grounding instruction is followed Reinstall device and cabling away from VSD and isolate power supply Contact with external flowing liquid Clad the device and pipe vicinity with porous or air filled material i e similar to bubble wrap to prevent ultrasonic signal from reaching external flowing liquid Flow reading ...

Страница 63: ... condition severe more than 50 internal build up or flow too low Increase Sensitivity setting Relocate onto the top position of the pipe Relocate to more turbulent pipe section Relay state not stable POSSIBLE CAUSES ACTION Frequent crossing of the low and high set points Increase Damping and turn Step Response off if necessary Increase buffer between low and high set points Turn on Persistence and...

Страница 64: ...spose of cable and Transducer in accordance with regional environmental regulations for electrical electronic products Controllers Remove power disconnect the Controller and remove battery if fitted Dispose of Controller in accordance with regional environmental regulations for electrical electronic products Dispose of batteries in accordance with regional environmental regulations for batteries E...

Страница 65: ... www pulsarmeasurement com S U P P O R T P U L S A R M E A S U R E M E N T C O M Copyright 2020 Pulsar Measurement Ltd Registered Address 1 Chamberlain Square CS Birmingham B3 3AX Registered No 3345604 England Wales Rev 1 0 ...

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